Vehicle-tongue



N A H A N R A flu M O M M m VBHIULE TONGUE.

$10,427,493 e Patented May 6, 1890.

INVENTOR WITNESSES as norms wz'rsns 0a., mom-mac WASNINCLIQN, n. c.

UNITED STATES PATENT OFFICE.

CYRUS M. OARNAHAN, OF OORAOPOLIS, PENNSYLVANIA, ASSIGNOR TO ALPHRETTA OARNAHAN, OF SAME PLACE, AND JOSEPH O. YOUNG, OF ROBINSON, ALLEGHENY COUNTY, PENNSYLVANIA.

VEHICLE-TONGUE.

SPECIFICATION forming part of Letters Patent No. 427,499, dated May 6, 1890.

Application filed December 3, 1889. Serial No. 332,402. (No model.)

To all whom it may concern:

Be it known that LOYRUS M. CARNAHAN, of Coraopolis, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Vehicle-Tongues, 850., of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a perspective view of my improved bar. Fig. 2 is a perspective View of a modified form thereof. Fig. 3 is an enlarged vertical cross-section on the line III III of Fig. 1. Fig. 4 is an enlarged vertical cross-section on the line IV IV of Fig. 2.

The object of my invention is to provide a metal bar for use in forming the shafts and tongues of vehicles and agricultural machincry, for levers, and like purposes; and it consists in a compound metal bar made of two hollow metal bars set with their fiat sides in contact and suitably connected together. The bar thus constituted is in effect a hollow bar with an internal crossweb, which supports the bar, rendering it of very great strength and imparting to it the capacity of resisting much heavier strain than the capacity represented by a mere doubling of the strength of one of its parts alone.

In Figs. 1 and 3 the parts I) and c of the bar are of triangular cross-section, and when joined together by encircling-clips 3, with their sides (Z in contact, form a bar rectangular in cross-section and with a diagonal bracing-web.

The bar shown in Figs. 2 and i is made of parts I) and 0, each of semicircular cross-section, so that when joined together, with their fiat sides (1 in contact, a bar circular in crosssection and with a diametrical web is formed.

The bars shown in Figs. 1 and 2 are of tapering form,the parts of which they are composed being tapered. In this form they are adapted to use as vehicle-tongues.

'I claim- 1. A compound metal bar of the character described, consisting of two hollow metal bars set parallel and with flat sides in lateral contact with each other, said bars being connected together and forming a compound bar having a cross WGlIOl brace, substantially as and for the purposes described.

2. A compound metal bar of the character described, consisting of two hollowlongitudinally-taperin g metal bars set parallel and with flat sides in lateral contact with each other, said bars being connected together and form ing a compound bar having a cross Web or brace, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 26th day of August, A. D. 1889.

CYRUS M. OARNAI-IAN.

Witnesses:

THOMAS W. BAKEWELL, WILLIAM BEAL. 

